Speaking today on ITV's Loose Women, Anastacia - who has known Michelle since she was younger - told the panel: "I don't believe she's going anywhere."
So far viewers have seen Michelle clash with Perez and the RuPaul's Drag Race star has grown closer to Katie Hopkins as a result.
But not convinced their friendship is the real deal, Anastacia said: "I think [Michelle] is being appropriate. She doesn't know her as well and Katie can make or break you in that house.
"Michelle can pretty much deal with anything, but all you have to do is go one side off of Perez and one side off of Katie and you're over. So far, so good for her."
The 46-year-old then went onto claim that viewers haven't seen all of Michelle just yet.
Caught up in the house's ongoing Hopkins vs. Hilton feud, Anastacia said she thought her friend hasn't yet had the chance to show off her funnier side. Although she does think Michelle is doing "really well" on the show.
Hoping fans will get to see why she loves Michelle so much, the 'Left Outside Alone' singer added: "Michelle is so great. She's a wonderful person."
And suggesting the American star isn't as glamorous as she seems, Anastacia revealed: "She doesn't live for that. She's like 'of course I bought my lashes and my stuff, are you kidding me! I've got to put these on' but she's a soccer mum... she takes her kids, she's on all the leagues!"
While UK viewers may not have recognised Michelle before she entered the house, it seems the 46-year-old has been a hit with the public so far.
Including a few familiar faces!
While TOWIE's Bobby Norris has said he loves Michelle Visage "too much", his co-star Ferne McCann tweeted during last night's episode of the show: "Michelle Visage is just everything. #CBB."
Coronation Street star Anthony Cotton also appears to be a fan of hers, he told followers last week: "CBB. Jeez. Apart from @michellevisage, they're all unhinged..."
Meanwhile, Celebrity Big Brother will evict its second housemate of the series in tonight's live show.
While Michelle is safe for another week, Perez Hilton, Nadia Sawalha and Alicia Douvall all face eviction along with Calum Best after Katie Price nominated him.
In a nominations twist on Tuesday night, Katie saved Katie Hopkins from the public vote, opting to put Calum up in her place instead.
We asked Reveal readers who they wanted to see go in tonight's eviction, and Perez Hilton was the favourite to get the boot after receiving 54.63% of the votes.
Could this mean the US blogger's time in CBB is finally up?!
Celebrity Big Brother airs tonight at 9pm on Channel 5.
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